Car-door.



PATENTED MAY 30, 1905.

J. SWANSON.

OAR DOOR.

APPLICATION FILED APR. 27,1904.

law/21hr UNITED STATES Patented May 30, 1905.

PATENT l-Trice.

JOSEPH SWVANSON, OF KANSAS CITY, KANSAS, ASSIGNOR OF ONE-HALF TOIVILLIAM N. HADDOOK, OF KANSAS CITY, KANSAS.

CAR-DOOR.

SPECIFICATION formingpart of Letters Patent No. 791,056, dated May 30,1905.

Application filed April 27, 1904. Serial No. 205,258.

1'0 all whmn it 77mg concern;

Be it known that I, J osnri-r SWANSON, a citizen of the United States,residing at Kansas City, in the county of Wyandotte and State of Kansas,have invented certain new and useful Improvements in Car-Doors, of whichthe following is a specification.

This invention relates to box-car doors, and has for its object toproduce a door which can be opened or closed easily and quickly andwhich is of simple, strong, durable, and cheap construction.

To this end the invention consists in certain novel and peculiarfeatures of construction and combinations of parts, as hereinafterdescribed and claimed, and in order that it may be fully understoodreference is to be had to the accompanying drawings, in which Figure 1represents a side view of a box-car with a door embodying my invention.Fig. 2 is a section taken on the line II II of Fig. 1. Fig. 3 is anenlarged perspective view of a trunnion forming a part of the invention.

In the said drawings, 1 designates a boxcar of the usual or anypreferred type, and 2 and 3 abutment-brackets secured to the side of thecar, bracket 2 being arranged contiguous to one vertical edge of thedoor-opening and bracket 3 beyond the opposite edge of the door-openinga distance about equal to the width of the latter, which is identifiedby reference character A. Secured to the outer side of the car above thedoor-opening is a bar 5, provided at its outer side with a dependingguide-flange 6, and secured vertically below the ends of bar 5, belowthe door-opening, are blocks 7, connected rigidly by the guide-bar 8, soas to form between it and the box-car a slot 9.

10 is a rectangular door of somewhat greater area than opening 4 andguided in proper relation to the car by flange 6 and bar 8.

A bracket 11, step-jointed, by preference, into the outer side of door10 and centrally thereof and secured rigidly in place by screws 12 ortheir equivalents, is provided with a circular boss 13 at its outer sideand with a cylindrical trunnion 1 1, terminating in athreaded stem 15,of smaller diameter, by preference, than the trunnion, said threadedstem 5 being provided with a diametric hole 16.

17 is a large wheel or roller resting upon guide-bar 8, whichconstitutes a track for said. roller as well as a guide for the door,and stepjointed in the inner side of and secured rigidly 5 5 to saidwheel or roller is a bearing-bracket 18, said bearing-bracket, as wellas the wheel or roller, being journaled on trunnion 14. It is alsojournaled upon the boss 13 and bears againstthe outer side of thelatter, so as to avoid friction between the proximate faces of the doorand wheel or roller. The wheel or roller is prevented from movingoutwardly upon the trunnion by a washer 19, secured upon the stem 15by anut 20, and the nut is 5 prevented from working off the stem by thespring cotter or key 21, extending through hole 16 of the stem.

The door is adapted to be locked in its closed position by any suitableconnection (not shown) with bracket 2, and when unlocked is opened bygrasping handle 22 or its equivalent and pushing it in the directionindicated by the arrow, Fig. l, which action causes the Wheel or rollerto travel along track 8 until arrested by the contact of the door withabutment-bracket 3. The door is reclosed by revolving the wheel in theopposite direction, as will be readily understood. In the opening orclosing movements of the door the weight of the latter will usuallymaintain it in a vertical position; but to guard against any tendency ofthe door to rotate with the wheel or roller due to undesirable frictionbetween the latter and the trunnion I provide the bar 5, 5 against Whichthe upper edge of the door will strike should it have any tendency torevolve.

While I have illustrated and described the invention as a door for cars,it is to be understood that the invention is intended to cover shuttersfor any purposesuch, for instance, as shutters for Window-openings inwarehouses and other buildings.

From the above description it will be apparent that I have produced acar door or shutter embodying the features of advantage enumerated asdesirable in the statement of invention and Which is obviouslysusceptible of modification in minor particulars without departing fromthe principle of construction involved.

Having thus described the invention, what I claim as new, and desire tosecure by Letters Patent, is- I 1. Thecombin ation with a car providedwith a door-opening, a. horizontal bar 5 above and outward of the saidopening, ahorizontal bar below the door-opening and outward of bar 5, aflange 6 for and depending below bar 5, and brackets at the oppositesidesof the door-opening in the vertical plane of bar 5, of a door ofgreater surface area than said opening and disposed between the outerside of the car and flange6 and bar 8, and a wheel or roller having ajournaled relation with the door and restingupon bar 8, all arrangedsubstantially as described.

' 2. The combinatio-nwith a car provided with a door-opening, ahorizontal bar 5 above and outward of the said opening, a horizontal barbelow the door opening and outward of. bar 5, a flange 6 for anddepending below bar 5, and brackets at the opposite sides of thedooropening in the vertical plane of bar 5, of adoor of greater surfacearea than said opening and I disposed between the outer side of the carand flange 6 and bar 8,. a. bracket 11 secured tothe door and providedwith a circular shoulder 13 and an outwardly projecting trunnion 14:, awheel or roller journaled on said trunnion and resting on the bar 8, andprovided at its inner side with a bracket step jointed on shoulder 13,and means for securing the wheel or roller reliably upon said trunnion.

In testimony whereof I affix my signature in the presence of twowitnesses.

JOSEPH SVVANSON. V-Vitnesses G. Roneuns, G. Y. THORPE.

